Senior Network Architect - Network Operations

Senior Network Architect – Network Operations

NTT is hiring an energetic Senior Network Architect to join our Global Operations Center. Our Network Architects manage the network infrastructure for large Enterprise companies and serve as senior technical leaders responsible for planning, design, policy management, monitoring, troubleshooting, and resolution of network events. This role performs complex troubleshooting, resolution, and root‑cause analysis for network and cloud connectivity challenges, working with team members—including security engineers, voice engineers, automation engineers, and suppliers—to support NTT Global Network’s customers.

• Responsible for managing and securing large Enterprise networks, including the planning, design, and operation of corporate SDWAN, WAN, LAN, Wireless, VoIP, and Cloud services.
• Provide customer support with monitoring, incident response, troubleshooting, and resolution of network and cloud functionality issues.
• Consult with enterprise customer architects and CIOs on IT network design, architecture, and compliance.
• Manage complex network issues, including high‑impact incidents, service outages, chronic problems, and changes on circuit underlay, SD‑WAN overlay, LAN, WLAN, NAC, DNS/DHCP/IPAM, and cloud‑based network services.
• Serve as escalation point with underlay ISPs and network vendors for complex network issues.
• Perform complex changes and maintenances on Enterprise infrastructure and NTT Backbone network.
• Lead customer infrastructure optimization efforts, including security hardening, code management, vulnerability management, configuration remediation, and standardization.
• Perform configuration and code updates across WLAN, LAN, SD‑WAN, NAC, DNS/DHCP/IPAM, SASE, SSE, and cloud‑based network services.
• Implement network and security technology projects, including design, proof‑of‑concept testing, and configuration for enterprise customers.
• Perform on‑premises WLAN, LAN, SD‑WAN network infrastructure and SASE design reviews, develop detailed health assessments, remediation deployment plans, and remediation plans.
• Design and implement AI‑driven automation to proactively identify performance issues, optimize routing, and reduce manual intervention across edge and cloud environments.

• A minimum of seven years of experience as a network engineer with strong hands‑on networking, security, and application troubleshooting expertise.
• Hands‑on technical experience in operational support of SD‑WAN, WAN, LAN, Switch, Wireless, VoIP, NAC, DNS, DHCP, IP Address Management, and cloud‑based solutions.
• Experience supporting advanced MPLS technologies (L3
  
  VPN, L2
  
  VPN, VPLS) and internet‑based WAN connectivity solutions (DIA, broadband, fixed wireless, 4G/LTE/5G, satellite).
• Experience managing leading network and security products (Cisco, Juniper, Aruba, Silverpeak, Palo Alto, Arista, Fortinet).
• Experience with Juniper MX and QFX series routers and switches, and Cisco Nexus switches, particularly within large‑scale MPLS backbone network environments.
• Expert knowledge of IP routing protocols (OSPF, EIGRP, BGP).
• Strong understanding of network‑layer technologies and controls—routing, segmentation, virtualization, traffic engineering.
• Expertise in Layer 2 technologies (STP/rSTP, LAG/LACP, 802.1Q VLAN tagging, 802.1p CoS/QoS).
• Experience deploying and managing cloud infrastructure (AWS, MS Azure, Open Stack, Cloud Stack, Netskope, Prisma, Zscaler, VPNs, VPC).
• Experience managing SASE/SSE components (SD‑WAN, Cloud Firewall, Secure Web Gateway, CASB, Zero Trust Network Access, DNS Security).
• Some experience deploying and managing Firewall/IDS/IPS solutions (Cisco, Palo Alto, Fortinet, Juniper, Checkpoint).
• Experience with IPSec, secure network connectivity solutions, VPN technologies (site‑to‑site, remote access), load‑balancing, network access control.
• Experience with zero‑trust setups and AAA/TACACS frameworks (segmentation, single sign‑on, MFA, AD integration).
• Ability to perform remote packet captures and packet‑capture analysis.
• Experience with network automation frameworks, API programmability (REST, RESTCONF, NETCONF).
• Knowledge of…